Kagi Search vs Preflight Checks (x402)
Kagi Search is an MCP server published by kagisearch. Marketplaces we read that list it: 1 (Docker MCP Catalog). Preflight Checks (x402) is an MCP server published by josediegorobles. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-22. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  Kagi Search | |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:c26439346cd6 Forks (GitHub): 49 Pulls (Docker Hub): 19 949 Stars (Docker Hub): 1 Stars (GitHub): 546 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.4.1 No figure published Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Kagi Search | Preflight Checks (x402) |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 546 | No figure on GitHub |
| Pulls (Docker Hub) (differs) | 19 949 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 49 | No figure on GitHub |
| Last release (differs) | Not published | 2026-10-16 |
| Where it runs (differs) | On your machine (mcp/kagisearch) | On your machine (@joserobles/preflight-mcp) |
| Transport | stdio | stdio |
| Tools it declares (differs) | 2 | Not published |
| Environment variables it asks for | 2, secrets among them: 1 | 2, secrets among them: 1 |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/kagisearch/kagimcp | github.com/josediegorobles/preflight-x402 |
| Changes in the last 7 days (differs) | 0 | 4 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Kagi Search
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
Preflight Checks (x402)
Deterministic pre-execution verification tools for AI agents with x402 USDC pay-per-call on Base
How to run each
Kagi Search As a local MCP server: Docker image
claude mcp add --env "KAGI_API_KEY=<YOUR_KAGI_API_KEY>" --transport stdio kagisearch -- docker run -i --rm -e KAGI_API_KEY mcp/kagisearchRequires: KAGI_API_KEY (secret)
Preflight Checks (x402) As a local MCP server: npm package
claude mcp add --env "PREFLIGHT_BUYER_PRIVATE_KEY=<YOUR_PREFLIGHT_BUYER_PRIVATE_KEY>" --transport stdio preflight-checks -- npx -y @joserobles/preflight-mcpRequires: PREFLIGHT_BUYER_PRIVATE_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of Preflight Checks (x402) publish no list of tools, so we do not compare tools.
Settings each asks for
Only Kagi Search asks for
KAGI_API_KEY (secret)KAGI_SUMMARIZER_ENGINE
Only Preflight Checks (x402) asks for
PREFLIGHT_BASE_URLPREFLIGHT_BUYER_PRIVATE_KEY (secret)
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Kagi Search · What it can do: Preflight Checks (x402) · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.